Photolysis of Carbon Disulfide by Interior Microwave Discharge Electrodeless Iodine Lamps

Abstract

AbstractThis study presents interior microwave discharge electrodeless iodine lamps (IMDEL-I2) that assist the photodegradation of CS2 at room temperature and atmospheric pressure. The investigation examined the photolysis efficiency of CS2, the absolute removal amount (ARA), and the energy yield (EY) under different gas residence times and input powers and also included an analysis of the photodegradation products of CS2. The experimental results indicated that the IMDEL-I2 was capable of emitting ultraviolet (UV) radiation in bands of 206.2, 250–350, and 385–400 nm, and vacuum ultraviolet (VUV) light at 178.3, 180.1, 183, 184.4, and 187.6 nm. The photodegradation rate of CS2 in the IMDEL-I2 system was 93.4%, with ARA of 18.1 mg/s and EY of 82.5 mg/kWh at the gas retention time of 1.98 s, an input power of 796 W, and an initial concentration of 85.6 mg/m3. The final photolysis products of CS2 were identified to be SO2, CO2, CO, and COS in the gaseous phase, and (CS)n, SO42−, and sulfur in the solid phase.